// Copyright 2019 The Cockroach Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// This software (KWDB) is licensed under Mulan PSL v2.
// You can use this software according to the terms and conditions of the Mulan PSL v2.
// You may obtain a copy of Mulan PSL v2 at:
//          http://license.coscl.org.cn/MulanPSL2
// THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
// EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
// MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
// See the Mulan PSL v2 for more details.

package opbench

import (
	"reflect"
	"testing"
)

func TestConfigIterator(t *testing.T) {
	check := func(cs []Options, expected []string) {
		ci := NewConfigIterator(&Spec{
			Inputs: cs,
		})

		var res []string
		c, ok := ci.Next()
		for ok {
			res = append(res, c.String())
			c, ok = ci.Next()
		}

		if !reflect.DeepEqual(res, expected) {
			t.Fatalf("expected %#v, got %#v", expected, res)
		}
	}

	check([]Options{
		{"a", []float64{1, 2, 3}},
		{"b", []float64{4, 5}},
	}, []string{
		"a=1/b=4",
		"a=2/b=4",
		"a=3/b=4",
		"a=1/b=5",
		"a=2/b=5",
		"a=3/b=5",
	})

	check([]Options{}, []string{""})

	check([]Options{
		{"a", []float64{1}},
		{"b", []float64{10}},
	}, []string{"a=1/b=10"})
}
